| /* |
| * Copyright (c) 2002, 2004, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 4736963 |
| * @summary Positive regression test from odersky |
| * @author odersky |
| * |
| * @compile Test.java |
| */ |
| |
| class Test { |
| |
| static <B> List<B> nil() { return new List<B>(); } |
| static <A> List<A> cons(A x, List<A> xs) { return xs.prepend(x); } |
| static <A> Cell<A> makeCell(A x) { return new Cell<A>(x); } |
| static <A> A id(A x) { return x; } |
| |
| public static void main(String[] args) { |
| List<String> xs = nil(); |
| List<String> ys = cons("abc", Test.<String>nil()); |
| List<String> zs = Test.<String>nil().prepend("abc"); |
| |
| System.out.println(nil()); |
| System.out.println(nil().length()); |
| |
| System.out.println(cons("abc", nil())); |
| System.out.println(nil().prepend("abc")); |
| System.out.println(nil().prepend(makeCell(null))); |
| System.out.println(cons(makeCell(null), nil())); |
| |
| System.out.println(id(nil())); |
| System.out.println(id(nil()).length()); |
| |
| System.out.println(cons("abc", id(nil()))); |
| System.out.println(id(nil()).prepend("abc")); |
| System.out.println(id(nil()).prepend(makeCell(null))); |
| System.out.println(cons(makeCell(null), id(nil()))); |
| |
| List<String> a = |
| args.length == 1 ? Test.<String>nil() : Test.<String>nil(); |
| a = (List<String>) Test.<String>nil(); |
| } |
| |
| } |